Patents by Inventor Daisuke Namikoshi

Daisuke Namikoshi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Carbon brush produced by mixing a carbonaceous filler and a binder, and kneading, shaping, and baking the mixture
    Patent number: 7859166
    Abstract: A carbon brush that suppresses a wear amount of a carbon commutator and has less swelling is provided. The carbon brush has a part connected to a lead and is one that slides in contact with a carbon commutator that is used in a fuel pump. The bulk density of the carbon brush is 1.85 g/cm3 or less, and the shore hardness of the carbon brush is 40 or less.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: December 28, 2010
    Assignee: Totankako Co., Ltd.
    Inventors: Daisuke Namikoshi, Fumihiro Hozumi, Shinichi Suzuki, Takahiro Sakoda
  • CARBON COMMUTATOR AND CARBON BRUSH FOR FUEL PUMP, AND FUEL PUMP HAVING THE CARBON COMMUTATOR AND THE CARBON BRUSH INCORPORATED THEREIN
    Publication number: 20100133948
    Abstract: The present invention provides a carbon commutator and a carbon brush for a fuel pump which have excellent slidability and abrasion resistance, and a fuel pump having the carbon commutator and the carbon brush incorporated therein. In the carbon commutator for a fuel pump, at least a contact portion to contact with a brush contains 0.2 to less than 5% by weight of an amorphous carbon. The carbon brush for a fuel pump to contact with and slide on the carbon commutator contains 0.2 to not more than 5% by weight of an amorphous carbon. The fuel pump includes the carbon commutator having the foregoing structure and the carbon brush having the foregoing structure.
    Type: Application
    Filed: April 4, 2008
    Publication date: June 3, 2010
    Applicant: TOTANKAKO CO., LTD.
    Inventors: Daisuke Namikoshi, Shinichi Suzuki, Naomi Yamashita, Shigeru Ikuta
  • Carbon Bruch
    Publication number: 20080303373
    Abstract: A carbon brush that can suppress a wear amount of a carbon commutator and is less swelling is provided. The carbon brush is one that slides in contact with a carbon commutator that is used in a fuel pump, the bulk density thereof being 1.85 g/cm3 or less, and the shore hardness thereof being 40 or less.
    Type: Application
    Filed: March 24, 2005
    Publication date: December 11, 2008
    Applicant: TOTANKAKO CO., LTD.
    Inventors: Daisuke Namikoshi, Fumihiro Hozumi, Shinichi Suzuki, Takahiro Sakoda
  • Commutator
    Patent number: 7148602
    Abstract: A commutator is provided which can be produced at low cost and is excellent in wear resistance and can be used in the fuel pump. The commutator is one in which at least those portions which come into contact with brushes comprise a filler mainly consisting of coke, and a carbonized binder.
    Type: Grant
    Filed: November 4, 2004
    Date of Patent: December 12, 2006
    Assignee: Totankako Co., Ltd.
    Inventors: Shinichi Suzuki, Fumihiro Hozumi, Daisuke Namikoshi
  • Commutator
    Publication number: 20050099088
    Abstract: A commutator is provided which can be produced at low cost and is excellent in wear resistance and can be used in the fuel pump. The commutator is one in which at least those portions which come into contact with brushes comprise a filler mainly consisting of coke, and a carbonized binder.
    Type: Application
    Filed: November 4, 2004
    Publication date: May 12, 2005
    Inventors: Shinichi Suzuki, Fumihiro Hozumi, Daisuke Namikoshi